```typescript index.ts
import { CustomerIoJourneysTrack } from 'customer-io-journeys-track-typescript-sdk';

const customerIoJourneysTrack = new CustomerIoJourneysTrack({
    /*
     * The Track API uses a basic authentication scheme. Your credentials are your **Site ID** and your **API key**, **Base-64 encoded** in the format `site_id:api_key`.
     * 
     * You can find your Site ID and API key on the [Track API Keys page](https://fly.customer.io/settings/api_credentials).
     * 
     */
    username: "USERNAME",
    password: "PASSWORD"
})
```